Improvement in grain-driers



COGSWELL 6L WlLLlANIS. Y

VGrain Drier.-

Patented Aug. H, 1863.

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o D b l D D b D D D i 3 a 9 i a 0 s 0 n a G 0 G 0 Q 0 0 0 I 9 0 9 0 i n N. PUERS Pholo-Lthogmphnr. Washington D. Q

I* UNITED STATES PATENT OFFICE.

MORTIMERV O. COGSWELL AND ADDISON G. VILLIAMS, OF BUFFALO, N. jY.

IMPRovEMENT IN GRAIN-Damas.

Specication forming part of Letters Patent No. 39,466, dated August 11, 1863.

To all whom it may concern.'

-Be it known that we, MORTIMER C. GoeswELL and ADDIsoN G. WILLIAMS, ofthe city of Buffalo, and State of New York, have invented certain new and useful Improvements in Grain-Driers 5 and we do hereby declare that the following is a full and exact description of the construction and operation thereof, referenee being had to the accompanying drawings, making a part of this speciiication, in whichv Figure I is a vertical longitudinal section of our improved grain-drier. Fig. II is a cross section of the same. Fig. III is aside elevation. Fig, IV is an end elevation.

Letters of like name and kind refer to like parts in each of the figures.

This invention is an improvement upon the graindrier patented to us February 18, 1862, and reissued January 6, 1863, to which reference may be had for details of the description and operation of the original machine.

The improvement herein described consists in making the orifice or opening in the external case, into which the grain is admitted for drying, for the escape of moisture, dust, air, 85o., through the side of the case, instead of the top, as heretofore, and for this purpose the external case is extended from the under side of this orice, in a direction tangential to the circumference of the case, to a point as high or higher than the upper side ofthe orifice, so that the orifice will open upwardly, and so that the grain will not be thrown out of the orifice as the buckets revolve, and at the same time the orifice will allow the evaporation, dust, air, 85e., to escape, and so that no part of the heated air can escape from the case without coming in contact with the grain; also, in combining with this case an external jacket, which shall encompass a greater or less portion of the case and receive the" heated air from the oritice and conduct it on the outside of the case. thereby rendering the drying process more effective by using the air which escapes frorn the inside of the case for increasing and continuing the heat on the outside of the case.

A represents the external case of our improved grain-drier, into which grain is admitted for drying. The opening or orice for the escape of the evaporation, moisture, dust, air,

&c.,`is made at the side of the case, and is clearly represented in Fig. II by the arrow 1 standing therein. The extension of the case on the under side of the orifice tangential to the circumference of the case is shown by the arrow 2. This part is carried higher than the other edge of the orifice, so as to cause the orice to open upwardly, and in order to prevent the grain from being crowded out of the case by the revolving buckets. When the orice is located at the top of the case, as in our patent of February 18, 1862, a portion of the hot air will escape without coming in contact with the grain. When located at the side, as herein described, all of the hot air within must mix with the grain before it can escape from the case.

The jacket which encompasses or covers a portion of the case is represented at B. This jacket may cover one-fourth, one half, threefourths, or more or less, as may be deemed expedient. It may or may not be provided with a door or lid, as shown at b', which may be opened when it is desired to let the blast of air pass oli' without going inside of the jacket, which may be desirable sometimes when the pressure of air becomes too great within the case. The door is also useful in cleaning the jacket ofthe dust and chaff which lodge therein. Ordinarily, the door will be kept closed during the drying process.

O is an opening or hopper at the head or upper end of the case for admitting the grain into the case, and D is a door or spout at the bottom of the opposite end for the discharge of the grain from the case. This case and jacket may be made of heavy sheet-iron or with boiler-iron. It is made of any required length-say, from tive to twenty-four feetand from two to six feet in diameter, and is supported upon suitable legs or standards, as shown at E.

The other parts of the drier are substantially like similar parts in the drier patented to us February 18, 1862, and before referred to.

F represents the hollow journal, and F the double head for admitting air into the perforated tubes.

, G are perforated tubes, which are connected with the double head and revolve within the case. These perforated tubes or pipes take the hot air from the double head and distribute it through or in the case, so that the air will thoroughly permeate and mixwith the grain.

H are buckets, placed parallel with the tubes and supported upon the same frame Work with the tubes and revolve With the tubes. These buckets are for the purpose of dipping up the grain from the bottom of the case, carrying it up, and dropping it down again in shoWers. Hot airis supplied from a furnace in a common manner.

Operation: The grain to be dried is spouted into the case through the hopper c in a common manner and falls upon the air-pipes and buckets. The revolution of these will keep the grain in constant motion-rising, falling, and showering-so that air heated to a very high degree may be used. The buckets will carry up the grain and will be full at the time they pass the orifice, so as to retard the escape of the air at the moment of passing, and thereby produce a greater pressure of air Within. As the buckets revolve, the grain will slide off in the upper part of the case and fall down in showers, so that the hot air must come in contact with the falling grain, as Well as With that which lies upon the bucket, Vbe'- fore it can pass out of the orifice. Hence, less air and less fuel are required to heat Ait When the orifice is located at the side of the case than if located at the top, as heretofore. The jack( t also enables us to gain an eXtra advantage by reusing the heated air after it has left the inside of the ca e for heating the outside of the case. This also effects a great saving in the amount of fuel required.

What We claim as our invention, and desire to secure by Letters Patent, is-

1. An orifice or opening made at the side of the Case in such a manner that it will open upwardly and prevent the grain from passing out, and at the same time increase the pressure and effectiveness of the air Within, and also allow the evaporation, dust, air, 85e., to escape, substantially as set forth.

2. The jacket B, (with or without its lid b,) in combination with the case A, for the purposes and substantially as described.

ADDISON G. WILLIAMS. MORTIMER C. COGSWELL.

Witnesses:

E. B. FoRBUsH, E. OsBoRNE. 

